I actually just had the same thing happen, only the entire console froze,
X and all. I don't know if the kernel was still working or not, I didn't
have another machine connected at the time. However, this is actually an
improvement for me - the ohci1394 module doesn't lock the PMU up and cause
the system to suddenly shutdown (this is a FireWire iBook). If I boot the
system with the FireWire device - a QPS CD-RW drive - plugged in, all is
fine.

In Stefan's case, it appears to be the transmit DMA of the chip stalling
for some unknown reason. I suggest moving that discussion to the
linux1394-devel list as I really don't know what may be going on.

Ben.


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